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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






2. To remove/separate testicles from animal's body before animal reaches puberty






3. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






4. Milk is 15% ________ and 85% __________.






5. What makes the milk flow through the mammary glands?






6. Birthing process (termination of gestation)






7. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






8. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






9. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






10. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






11. 114 days






12. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






13. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






14. Sperm production






15. Help to signal hormone levels which we need both in the brain right next to each other.






16. Start of the reproductive tract for the female. located outside of the body






17. Can survive ~7 days in cow. vast majority <48 hours






18. Important 'landmark' during palpation






19. Check feet and legs - look for masculine traits in build such as crest and muscling






20. Milk ~305 days - dry 60 days prior to calving






21. 26 hours after estrus begins






22. What helps regulate spermatogenesis?






23. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






24. 265-285 days






25. (FSH) causes egg to mature in females






26. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






27. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






28. (male) pushes the testes outward toward the legs for a cool-down off of the body






29. Days which have increasing daylight hours

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30. Provide nourishment for the developing sperm






31. Why does estrus happen before ovulation?






32. (male) pushes the testes upward toward the body for warmth or protection






33. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






34. Not under a timeline - cow can not be sold as steak






35. ~305 days (altough often longer due to breeding difficulties)






36. Way to know everything is alright with the breeding male






37. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






38. Can survive ~7 days in cow. vast majority <48 hours






39. (LH) causes female's egg to break (her period)






40. Days which have decreasing daylight hours

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41. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






42. Scar tissue plugs up chambers of udder






43. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






44. What makes the milk flow through the mammary glands?






45. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






46. 16-20 hours






47. Urinary calculi.






48. The more stressed out the male is - the less sperm he is going to produce






49. 19-23 (21) days






50. 1-2 days